﻿<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office">
<head>
    <title>dojox.gfx: 100 draggable circles</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <style type="text/css">
        @import "../../../dojo/resources/dojo.css";
        @import "../../../dijit/tests/css/dijitTests.css";
    </style>
    <script type="text/javascript" src="../../../dojo/dojo.js"></script>
    <script type="text/javascript">

        dojo.require("dojox.gfx");
        dojo.require("dojox.gfx.move");
        var container = null, surface = null, surface_size = null;
        function getRand(from, to) {
            return Math.random() * (to - from) + from;
        }
        var skew_stat_factor = 15;
        function getRandSkewed(from, to) {
            // let skew stats to smaller values
            var seed = 0;
            for (var i = 0; i < skew_stat_factor; ++i) {
                seed += Math.random();
            }
            seed = 2 * Math.abs(seed / skew_stat_factor - 0.5);
            return seed * (to - from) + from;
        }
        function randColor(alpha) {
            var red = Math.floor(getRand(0, 255)), green = Math.floor(getRand(0, 255)), blue = Math.floor(getRand(0, 255)), opacity = alpha ? getRand(0.1, 1) : 1;
            return [red, green, blue, opacity];
        }
        function makeCircleGrid(itemCount) {
            var minR = 10, maxR = surface_size.width / 3;
            for (var j = 0; j < itemCount; ++j) {
                var r = getRandSkewed(minR, maxR), cx = getRand(r, surface_size.width - r), cy = getRand(r, surface_size.height - r), shape = surface.createCircle({cx: cx, cy: cy, r: r}).setFill(randColor(true)).setStroke({color: randColor(true), width: getRand(0, 3)});
                new dojox.gfx.Moveable(shape);
            }
        }
        function initGfx() {
            container = dojo.byId("gfx_holder");
            surface = dojox.gfx.createSurface(container, 500, 500);
            surface_size = {width: 500, height: 500};
            makeCircleGrid(100);
            // cancel text selection and text dragging
            dojo.connect(container, "ondragstart", dojo, "stopEvent");
            dojo.connect(container, "onselectstart", dojo, "stopEvent");
        }
        dojo.addOnLoad(initGfx);

    </script>

    <style type="text/css">
        .movable {
            cursor : pointer;
        }
    </style>

</head>
<body>
<h1>dojox.gfx: 100 draggable circles</h1>

<p>Warning: Canvas renderer doesn't implement event handling.</p>

<div id="gfx_holder" style="width: 500px; height: 500px;"></div>
</body>
</html>
